Series 3G

Series 3G pumps are provided for differential pressures to 250 PSIG (17.2 Bar) and flow rates to 55 GPM (208 L/M). Mountings include foot or flange. Casing materials are either cast iron or steel. These three screw pumps are used for distillate fuel oil transfer and burner services, machinery lubrication and other industrial pumping applications. Most sizes are available with a tamper resistant built-in pressure relief valve for protection of the pump from momentary pressure overloads.

3G

SERIES

Nominal flow rate, GPM/LPM, at 200 PSI (14 BAR), 100 SSU (20 CST)

SPEED RPM

Size

3500

2900

1750

1450

095-1.2D

5/18

4/14

-

-

095-1.6D

6/25

5/18

-

-

095-2.0D

9/33

7/26

3/11

-

118-1.6D

14/52

11/40

5/17

-

118-2.0D

18/69

14/54

7/26

5/19

143-1.5D

25/94

20/75

10/37

7/27

143-1.7D

28/105

22/82

11/40

8/29

143-2.0D

34/128

27/101

14/52

10/39

162-1.6D

38/144

30/114

15/56

11/42

162-2.0D

50/188

40/151

21/78

16/60

Series 3G Specifications

Casing- Cast iron or cast steel.

Rotors- Power rotor is ductile (nodular) iron. Idler rotors are gray iron. Rotors are nitride hardened for use in the 32-60 SSU (2-10 CST) range for fuel oils or for steel cased pumps.

Mounting- May be foot or flange mounted in any orientation. Vertical tank mounts available.

Connections-

Case Material

Inlets

Iron

Steel

Axial, straight thread

Standard

N/A

Axial, SAE pad

Optional

Standard

Radial, straight thread

Optional

N/A

Radial, SAE pad

Optional

Optional

Outlets

Radial, straight thread

Standard

N/A

Radial, SAE pad

Optional

Standard

Straight thread for use with o-ring fittings. SAE pad is for use with mating SAE 4-bolt 3000 PSI flanges. N/A is not available.

Filtration- Inlet strainers are required to keep contaminants and abrasives out of the pump and must be selected in consultation with the strainer vendor to prevent pump starvation. Normally, 60 mesh (0.01 inch- 238 micron) for light and 1/8-3/16 inch (3-5mm) openings for heavy oils are recommended. Return line filters for closed loop systems also recommended.